Taylor Swift knows how to throw a party. The country superstar turned her Rhode Island beachside mansion into a Fourth of July getaway for a large group of celebrity friends this weekend. On Sunday she posted a photo on Instagram revealing all the famous faces with whom she spent the holiday. The guest list included Emma Stone and Andrew Garfield, "Girls" creator Lena Dunham, fellow singer-songwriter Ingrid Michaelson and "Gossip Girl" star Jessica Szohr. Taylor documented the events of the weekend, which included setting up a "slip 'n slide" in the pouring rain, hanging out on a boat, hitting the beach and homemade pies. Taylor wrapped up her massive "Red" tour earlier this year and is now said to be at work on her next album.